Speed-changing mechanism.



E. H. .R. BARTON.

SPEED CHANGING MECHANISM.

API'LIOATION FILED MAR. 18, 1907.

Patented Dec. 7, 1909 W/INESSES: 5 W //%m mmron UNITED STATES PATENT OFFICE.

EDWARD H. R. BARTON, OF EI IGLEWOOD, NEW JERSEY, ASSIGNORHDF ONE-HALF TO RAYMOND CARPENTER, O13 HACKENSAGK, ZJ'EW' JERSEY. 4

SPEED-CHANGING MECHANISM.

Specification 01' letters latent.

Patented Dec. 7, i909.

Application filed March 18, 1907. Serial No. 36$,150.

Tb all whom a may concern:

Be it known that I, EDWARD H. R. BAn- TON, a citizen of the United States, residing which the fol owing is a specification.

My invention relates to a new speed changing mechanism in which the speed of the driven member bears no'fixed ratio to the speed of the driver, but is either maintained constant automatically, or may be varied at the will of the operator. I attain these objects by the mechanism illustrated in the accompanying drawing, in which Figure 1 represents a machine for automatically maintaining a driven shaft at constant speed regardless of the speed of the driver; and Fig. 2 represents a variatio by means of which the machine is converged into a change gear having an unlimited. number of speed ratios and operated main ually.

S1milar characters refer to similar parts in both figures.

In the, drawing, 1 is the framework supporting the main bearings 2 and 3.

' his the driven shaft and to it are fastened the arms 55 and the bevel gear 6.

7 is the driving shaft to which is fastened the bevel gear 8.

\ 21. 'This collar is free to tn...

The cage 9, which is shown partly in section, is supported on thetwo shafts e and 7 at the bearings 10 and'll respectively, but is free totur n'on them. The bevel 12 and 13 are mounted on screws A and 1.5 respectively, which are screwed into epposite sides of cage 9. These bevel gears are free to turn on the screws: their tee mesh with those of gears 6 and 8. Governor weights l616 mounted on the ends of. vers 17. 17 are pivoted to arms 55. To the levers 1 7-47, are pivoted frictio 18-18. These shoes bear on the 0 face of the 19 "which forms cage 9. The Weights 163L6 are ether against the actio. o orce, by springs 20-2tl att It has a groove 22 which is e 23, carried on the end of slidin i means of which the collar 21 ma along on the shaft 7, thus tighter. springs 20-20.

The levers 25-%5, shown in Fig.

n shoes be used instead of levers 17-47 (Fig.

1) are so light that the effect of centrifugal force on them may be neglected. They are connected to collar 21 by springs 26-26.

The operation of this mechanism to automatieally maintain a constant speed of the driven shaft will be explained by reference to Fig. 1. When the apparatus is at rest, the springs 20-20 pull the shoes 1818 hard 7 against the ring 19, locking them together.

\Vhen-the driving shaft 7 begins to turn,

gear 8 attached to it tends to rotate gears 19. and 13 on their axes. But if gears 12 and 13 rotate, they will act on gear 6 to cause themselves, and case 9 which carries 3 0 them, to rotate with respect to gear 3 and raft 4- arins 5-5, levers Ti -17 a shoes 18-18, connect-ed to shaft 4. 13m

1 ,I since shoes 1818 and .19 are locked together, case 9 can rotate only at the same 315 speed as shaft Therefore, gears 19. and 13 cannot turn on their axes and shaft t must rotate at the same speed as shaft 7, under the conditions supposed. As the speed of the shafts increases, the centrifugal force of the Weights 1616 reduces the pressure of the shoes 18-18 on the ring 19. W hen the speed of shaft at passes that for which the governor has been set, the shoes release the ring, thus allowing the gears to turn upon each other and the case 9 to rotate faster than shaft 4-. If it were possible for the shoes to release the ring entirely, the gears 19. and l3would cease to drive G and she. 4: and case 9 would rotate the speed of ""L Y. But, s-

5 i the speed of shaft (a Ialls below norn governor springs 91"! act shoes 18-"8 e their it} L i gears t 4. Thus shaft 7.

I am aware that prior to my invention, speed changmg gears have been made 111 which the speed'ratio between the driven and the driving shafts is fixed by controlling the actual speed of some intermediate gear or gears. V

I do not desire to be limited to the disclosure that has been made in this case; but

What I claim as my invention, and desire to secure by Letters Patent, isl 1. In a speed changing mechanism, a driven member, a driving member, an intermediate member connected to the driven and the driving members and other means to connect and to cause the driven member and the intermediate member to react upon each other and thereby determine the speed of the driven member, substantially as set' forth. 2. In a speed changing mechanism, a driven membeija driving member, an intermediate member connected to the driven and the driving members, other means to connect and to cause the driven member and the intermediate member to react upon each other and means to vary the said reaction between the said driven and intermediate members and thereby control the speed of the driven member, substantially as set forth. In a speed changing mechanism, a

driven member, a driving member, an intermediate member connected to the driven and the driving members, other means to connect and to cause the driven member and the intermediate member to react upon each other and means to automatically vary the reaction between. the said .driven and intermediate members and thereby automatically control the speed of the driven member substantially as set forth.

4:. In a speed changing mechanism, a driven member, a driving member, an intermediate member connected to the driven and the driving members, other means to connect and to cause the driven member and the intermediate member to react upon each other and a governor to automatically vary the said reaction between the said driven and intermediate members and thereby automatically control the speed of the driven member, substantially as set forth.

. 5. In a speed changing mechanism, a driven member, a driving member, an intermediate member, means to cause the driven member and the intermediate member to react upon each other and. a governor connected to the driven member to automatically vary the reaction between the said driven and intermediate members and thereby automatically control the' speed of the driven member, substantially as set forth.

6. In a speed changing mechanism, a driven member, a driving member, an intermediate member, a slipping-friction clutch between the driven member and the intermediate member and a governor to automatically operate the said slipping friction clutch and thereby automatically control the speed of the driven member, substantially as set forth.

7. In a speed changing n'ieohanism, the combination of a driven shaft, a driving shaft, a train of gears connecting them, a slipping friction clutch between the driven shaft and the train of gears and means to automatically operate said clutch, substantially as, and for the purposes set forth.

8. .In a speed changing mechanisn'i, the

combination of a driven shaft, a driving shaft, a differential gear connecting them, a slipping friction clutch between the driven shaft and the differential gear and means to automatically operate said clutch,

substantially, as, 'and for the purposes set forth.

9. In a speed changing mechanism, the combination of a driven shaft, a driving shaft, a train of gears connecting them, a slipping friction clutch between the driven shaft and the train of gears and a governor mounted on the driven shaft and designed to operate the said clutch, substantially as, and for the purposes set forth.

10. In a' speed changing mechanism, the combination of a driven shaft, a driving shaft, a differential 'gear connecting them, a slipping friction clutch between the driven shaft and the differential gear and a governor mounted on the driven shaft and designed to operate thesaid clutclnsubstantially as, and for the purposes set forth.

11. In a speed changing mechanism, the combination of a driven shaft, a driving shaft, a train of gears connecting them, a slipping friction clutch between the driven shaft and the train of gears, a governor mounted on the driven shaft and designed to operate the said clutch and means to adjust the said governor for different speeds ofthe driven shaft, substantially as, and for the purposes set forth.

12. In a speed changing mechanism, the combination of a driven shaft, a driving shaft, a differential gear connecting them, a slipping friction clutch between the driven shaft and the differential gear, a governor mounted on the driven shaft and designed to operate the said clutch and means to adj ustthe said governor for different speeds of the driven shaft, substantially as, and for the purposes set forth.

13. In a speed changing mechanism, the combination of a driven shaft, a driving shaft and connecting them a dilferential gear having an annular bearing surface, with a slipping friction clutch consisting of a shoe or shoes which rotate With the driven shaft and bear upon the said annular surface on the diiferential gear and a governor connected-to the driven shaft, which controls "the pressure'of the said shoe or shoes upon the said annular surface, substantially as, and for the purposes set forth.

i i. In a speed changing mechanism, the combination of a driven shaft, :1 driving shaft and a ditferential gear connecting them, with a. slipping friction clutch between the driven shaft and the differential gear and a governor consisting of a Weight or weights mounted upon and rotating With the driven shaft, which operate to release,

Geo. A. HORNE, C. 1. QUINN. 

